Influence of Large‐Scale Atmospheric Dynamics on Precipitation Seasonality of the Tibetan Plateau and Central Asia in Cold and Warm Climates During the Late Cenozoic

The hydroclimate of the Tibetan Plateau (TP) and Central Asia (CA) plays a crucial role in sustaining surface water reservoirs thus resources respective regions. In this study, we investigate changes Asian its driving forces during specific time intervals last 3 Ma. We conduct high-resolution (∼0.75° per grid cell) general circulation model ECHAM-5 experiments with boundary conditions for mid-Pliocene (∼3 Ma), Last Glacial Maximum (LGM; ∼21 ka), mid-Holocene (∼6 pre-industrial. Results suggest that seasonally relatively high precipitation rates (>1 mm day−1) were longer shorter LGM, relative to calculate different monsoon indices detect intensity, strength duration East summer (EASM), South (SASM), Indian (ISM), construct climatologies mid-latitude high-level westerly jet (WJ) stream occurrences based on ECHAM5 wind fields. Our results warm periods (e.g., or interglacial), WJ migrates northward earlier year (April) reaches higher latitudes than pre-industrial, resulting wetter TP CA. During cooler LGM glacial), later (June) remains over lower latitudes, drier Increased/decreased local CA mid-Pliocene/LGM correlates strongly (a) EASM, SASM, ISM (b) latitudinal position.